我的javascript函数不工作，当我点击提交我的表单

试试这个:

  <form action="<?php echo base_url();?>my_data" onsubmit="return onSubmit()" method ="POST">
                            <p class = "my_data_text">Nome</p>
                            <input type="text" class="form-control" style="width:54%;" name= "changed_user_name" value = "<?php echo $this->session->userdata('nome_usuario');?>"></input>
                            <p class = "my_data_text">Email</p>
                            <input type="text" class="form-control" style="width:54%;" name = "changed_user_email" id="changed_user_email" value = "<?php echo $this->session->userdata('email_usuario');?>"></input>
                            <p class = "my_data_text">Digite sua nova senha</p>
                            <input type="password" class="form-control" style="width:54%;" name = "changed_password" id="changed_password"></input>
                            <p class = "my_data_text">Confirme sua nova senha</p>
                            <input type="password" class="form-control" style="width:54%;" name = "change_confirm_password"></input>
                            <button id ="btn_mydata_submit_incident" type="submit" class="btn btn-primary" >salvar</button>
                            </form>
                        </div>
                </div>
                </div>
            </div>
        </section>
        <script type="text/javascript">
function onSubmit(){
    var result =1;
    var checar = document.getElementById("changed_user_email");
    var test = checar.value.indexOf("@");
    if (test == -1){
        alert("email inválido");
        result =0;
    }
    var checar = document.getElementById("changed_password");
    var passw=  /^[A-Za-z]'w{7,14}$/;
    if(!checar.value.match(passw)){
        alert("password inválido");
        result =0;
    }
    if (result ==0){
        return false;
    }
    else{
        return true;
    }
}
</script>

我认为这是因为你没有使用input type="submit"，而是使用button type="submit"。

你应该替换这个提交按钮:

<input type="submit" value="salvar" class="btn btn-primary" id="btn_mydata_submit_incident"/>

或者将onSubmit javascript事件更改为onclick javascript事件

另一种方法是

$('#button_id').click(function(){ 
 onSubmit(); //call the function,return something true false value from function return and depending on that submit the form
 $('#form_id').submit();
});

我希望，它帮助你!!

使用此代码…为我完美地工作……

<form action="" onsubmit="onSubmit()" method ="POST"> <p class = "my_data_text">Nome</p> <input type="text" class="form-control" style="width:54%;" name= "changed_user_name" value = ""></input> <p class = "my_data_text">Email</p> <input type="text" class="form-control" style="width:54%;" name = "changed_user_email" value = ""></input> <p class = "my_data_text">Digite sua nova senha</p> <input type="password" class="form-control" style="width:54%;" name = "changed_password"></input> <p class = "my_data_text">Confirme sua nova senha</p> <input type="password" class="form-control" style="width:54%;" name = "change_confirm_password"></input> <button id ="btn_mydata_submit_incident" type="submit" class="btn btn-primary" >salvar</button> </form> </div> </div> </div> </div> </section> <script type="text/javascript"> function onSubmit(){ alert("email inválido"); var result =1; var checar = document.querySelector("#changed_user_email"); var test = checar.value.indexOf("@"); if (test == -1){ alert("email inválido"); result = 0; return false; } var checar = document.querySelector("#changed_password"); var passw= /^[A-Za-z]'w{7,14}$/; if(!checar.value.match(passw)){ alert("password inválido"); result =0; return false; } if (result == 0){ return (false); } else{ return (true); } } </script>